#定义数据
num1 = "100"
num2 = "1.99"
#强制转换
# print(type(int(num1)))
# print(type(float(num2)))
# print(type(float(num1)))
#
# info = 12345
# print(type(str(info)))
# info1 = [11,"aa", True,1.88]
# print(type(str(info1)))
# print(type(str(info1)))
#转换为集合（集合中元素不能重复：可以去重）
info2 = [11,22,33,11,11,11,22,55]
print(str(info2))
# print(type(str(info2)))